Emailed Stihl, and they will warranty one of the units...the other unit being so old (2006) he couldn't warranty that one. So I'm pretty happy. I'll be out $40 and my own labor for one unit and zero on second unit. Sometimes a company needs to be reminded how much equipment you buy from them.
He did pull up warranty history for all HS45's and he said is was 5 units in last two years, none of them for handles. Not sure I believe it but what else can I do.
Now I guess I will ride them around in a specially padded box to make sure they don't break again.
Georgia Applicator License Number 09102
"A well-regulated militia being necessary to the security of a free state, the right of the people to keep and bear arms shall not be infringed."